And when stores run out or power outages hit, you don't want to be scrambling to find it. The good news is that you can make your own distilled water at home using a few basic kitchen items.

Hit Ctrl+F3 to open Name Manager, click New and paste in your LAMBDA string into the Refers To field. Give your new function ...

Single-use plastic can be an attractive option for hospitals—cheap, durable, and easily tossed out—and each new fresh plastic container or covering offers a newly sterile environment.